chore: update main with v1.30.1 changes

[scotthart]

This change is 

[google-cloud-cpp-bot]

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[codecov]

Codecov Report

Merging #7160 (7c09f9e) into main (1c3fedd) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #7160      +/-   ##
==========================================
- Coverage   94.44%   94.43%   -0.01%     
==========================================
  Files        1310     1310              
  Lines      113293   113293              
==========================================
- Hits       106998   106992       -6     
- Misses       6295     6301       +6     

Impacted Files	Coverage Δ
...bigtable/examples/bigtable_hello_instance_admin.cc	81.31% <0.00%> (-2.20%)	⬇️
...ud/spanner/integration_tests/client_stress_test.cc	85.52% <0.00%> (-0.66%)	⬇️
...le/cloud/spanner/database_admin_connection_test.cc	99.20% <0.00%> (-0.50%)	⬇️
google/cloud/pubsub/samples/samples.cc	91.67% <0.00%> (-0.08%)	⬇️
...cloud/pubsub/internal/subscription_session_test.cc	98.02% <0.00%> (+0.24%)	⬆️
...le/cloud/storage/internal/curl_download_request.cc	89.59% <0.00%> (+0.37%)	⬆️
...le/cloud/internal/default_completion_queue_impl.cc	97.60% <0.00%> (+0.59%)	⬆️

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[devbww]

FWIW, it looks like we only have single-blank-line separators between all the other releases.

[scotthart]

Reviewable status: 0 of 5 files reviewed, 1 unresolved discussion (waiting on @devbww)

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CHANGELOG.md, line 67 at r1 (raw file):

Previously, devbww (Bradley White) wrote…

FWIW, it looks like we only have single-blank-line separators between all the other releases.

blank line removed

[google-cloud-cpp-bot]

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For commit: 7c09f9ed8cd3f4baa7d1956f4b4f9e5b10669847

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